Vintage was a better toy line. Because I liked to be able to put Chewie in the X-Wing. If you have to ask why I would want to, I wonder if you were ever really a kid. Most of the characters were designed to sit (something a supposed "super articulated clone trooper" has problems with.)
Vintage figures hold up better, less parts to loose. I knew when ball joint heads and swivel wrists became common, we'd see loose, kid-owned figures with those parts missing. And I have seen them, at yard sales and on ebay.
They had vehicles and playsets that will never be remade in modern: Dagobah, Star Destroyer, Death Star, Ewok village, Rebel Transport, Imperial attack base, droid factory, the real dewback
, Jabba's Dungeon, Bespin Cloud City, Hoth Rebel Command Base, Land of the Jawas, Hoth Ice Planet (okay, those last 5 sucked...
Modern has better action figures (finally, it was touch and go with POTF2).
Looking back on the 70's-80's Kenner line, it seems ridiculous that there was only one Vader, one Obi-Wan and one Tattooine Luke, all with permanent retractable lightsaber arms. Luke couldn't even hold a blaster...or not well, anyway!
And the later lightsabers were pathetic looking, even for the era, colored sticks that were too short.